package com.ynny.example03;

public abstract class MilkTest extends Milk{
    public abstract void teawithmilk1();
    public abstract void addstep();

    public void step(){
        System.out.println("准备牛奶和茶叶");
        System.out.println("1.加牛奶");
        System.out.println("2.加茶叶");
        System.out.println("3.打包");
    }
}
